• Metric O-Rings

OneMonroe’s Metric Buna O-Rings are engineered to provide reliable sealing performance across a variety of industrial and commercial applications. Made from high-quality Buna-N (Nitrile) rubber, these O-rings are known for their excellent resistance to oils, fuels, and other petroleum-based products, making them ideal for use in environments where durable, leak-proof seals are essential. Buna-N’s resilient properties allow it to maintain its integrity even in challenging temperatures, ranging from -40°F to 250°F, ensuring these O-rings can withstand both low and high-stress conditions with ease. With a broad range of metric sizes available, OneMonroe ensures you’ll find the right fit for your exact specifications.

Our Metric Buna O-Rings are crafted to offer outstanding resistance to abrasion and tearing, providing long-lasting performance in rigorous applications. This makes them well-suited for automotive, aerospace, marine, and hydraulic systems, as well as in general maintenance and repair settings. The unique chemical composition of Buna-N allows these O-rings to endure pressure and friction over extended periods without compromising their sealing capabilities, making them a reliable choice for static and dynamic sealing tasks. Each O-ring is manufactured to precise industry standards, ensuring a dependable fit and function in every installation.

With OneMonroe, you’re getting more than just a product; you’re receiving a commitment to quality and expertise. Our team is dedicated to supporting your projects with high-quality metric Buna O-Rings that meet both industry standards and specific customer requirements. We provide technical support to help you select the best O-ring for your application, offering detailed product specifications and guidance. Trust OneMonroe to deliver durable, efficient, and cost-effective sealing solutions tailored to meet the demands of your unique projects.

For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.

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Cross Section Width (mm)

Durometer

Inside Diameter (mm)

Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

N/A
121020 		N/A Metric Standard O-Ring N/A Buna N/A 259 N/A 3.53 mm N/A 90 N/A 158.34 mm
N/A
121021 		N/A Metric Standard O-Ring N/A Buna N/A N/A 3.53 mm N/A 70 N/A 158.82 mm
N/A
121022 		N/A Metric Standard O-Ring N/A Buna N/A N/A 3.53 mm N/A 90 N/A 158.82 mm
N/A
121023 		N/A Metric Standard O-Ring N/A Buna N/A 260 N/A 3.53 mm N/A 70 N/A 164.69 mm
N/A
121024 		N/A Metric Standard O-Ring N/A Buna N/A 260 N/A 3.53 mm N/A 90 N/A 164.69 mm
N/A
121025 		N/A Metric Standard O-Ring N/A Buna N/A 261 N/A 3.53 mm N/A 70 N/A 171.04 mm
N/A
121026 		N/A Metric Standard O-Ring N/A Buna N/A 261 N/A 3.53 mm N/A 90 N/A 171.04 mm
N/A
121027 		N/A Metric Standard O-Ring N/A Buna N/A 262 N/A 3.53 mm N/A 70 N/A 177.39 mm
N/A
121028 		N/A Metric Standard O-Ring N/A Buna N/A 262 N/A 3.53 mm N/A 90 N/A 177.39 mm
N/A
121029 		N/A Metric Standard O-Ring N/A Buna N/A 263 N/A 3.53 mm N/A 70 N/A 183.74 mm
N/A
121030 		N/A Metric Standard O-Ring N/A Buna N/A 263 N/A 3.53 mm N/A 90 N/A 183.74 mm
N/A
121031 		N/A Metric Standard O-Ring N/A Buna N/A 264 N/A 3.53 mm N/A 70 N/A 190.09 mm
N/A
121032 		N/A Metric Standard O-Ring N/A Buna N/A 264 N/A 3.53 mm N/A 90 N/A 190.09 mm
N/A
121033 		N/A Metric Standard O-Ring N/A Buna N/A 265 N/A 3.53 mm N/A 70 N/A 196.44 mm
N/A
121034 		N/A Metric Standard O-Ring N/A Buna N/A 265 N/A 3.53 mm N/A 90 N/A 196.44 mm
N/A
121035 		N/A Metric Standard O-Ring N/A Buna N/A 266 N/A 3.53 mm N/A 70 N/A 202.79 mm
N/A
121036 		N/A Metric Standard O-Ring N/A Buna N/A 266 N/A 3.53 mm N/A 90 N/A 202.79 mm
N/A
121037 		N/A Metric Standard O-Ring N/A Buna N/A 267 N/A 3.53 mm N/A 70 N/A 209.14 mm
N/A
121038 		N/A Metric Standard O-Ring N/A Buna N/A 267 N/A 3.53 mm N/A 90 N/A 209.14 mm
N/A
121039 		N/A Metric Standard O-Ring N/A Buna N/A 268 N/A 3.53 mm N/A 70 N/A 215.49 mm
N/A
121040 		N/A Metric Standard O-Ring N/A Buna N/A 268 N/A 3.53 mm N/A 90 N/A 215.49 mm
N/A
121041 		N/A Metric Standard O-Ring N/A Buna N/A 269 N/A 3.53 mm N/A 70 N/A 221.84 mm
N/A
121042 		N/A Metric Standard O-Ring N/A Buna N/A 269 N/A 3.53 mm N/A 90 N/A 221.84 mm
N/A
121043 		N/A Metric Standard O-Ring N/A Buna N/A 270 N/A 3.53 mm N/A 70 N/A 228.19 mm
N/A
121044 		N/A Metric Standard O-Ring N/A Buna N/A 270 N/A 3.53 mm N/A 90 N/A 228.19 mm
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